#ifndef NET_FS_QUERY_MANAGER_H
#define NET_FS_QUERY_MANAGER_H
#include "Locker.h"
#include "QueryIterator.h"
class Volume;
class VolumeManager;
class QueryManager {
public:
QueryManager(VolumeManager* volumeManager);
~QueryManager();
status_t Init();
status_t AddIterator(QueryIterator* iterator);
status_t AddSubIterator(
HierarchicalQueryIterator* iterator,
QueryIterator* subIterator);
private:
status_t RemoveSubIterator(
HierarchicalQueryIterator* iterator,
QueryIterator* subIterator);
public:
QueryIterator* GetCurrentSubIterator(
HierarchicalQueryIterator* iterator);
void NextSubIterator(
HierarchicalQueryIterator* iterator,
QueryIterator* subIterator);
private:
void RewindSubIterator(
HierarchicalQueryIterator* iterator);
public:
void PutIterator(QueryIterator* iterator);
void VolumeUnmounting(Volume* volume);
private:
struct IteratorMap;
Locker fLock;
VolumeManager* fVolumeManager;
IteratorMap* fIterators;
};
class QueryIteratorPutter {
public:
QueryIteratorPutter(QueryManager* manager, QueryIterator* iterator)
: fManager(manager),
fIterator(iterator)
{
}
~QueryIteratorPutter()
{
if (fManager && fIterator)
fManager->PutIterator(fIterator);
}
void Detach()
{
fManager = NULL;
fIterator = NULL;
}
private:
QueryManager* fManager;
QueryIterator* fIterator;
};
#endif
